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The health effects associated with organophosphate poisoning are a result of excess acetylcholine (ACh) present at different nerve synapses and neuromuscular junctions across the body. Specifically, acetylcholinesterase (AChE), the enzyme that normally and constantly breaks down acetylcholine, is inhibited by the organophosphate substance.
Atropine is often used in conjunction with the oxime pralidoxime chloride. Some of the nerve agents attack and destroy acetylcholinesterase by phosphorylation, so the action of acetylcholine becomes excessive and prolonged. Pralidoxime (2-PAM) can be effective against organophosphate poisoning because it can re-cleave this phosphorylation.
Pralidoxime (2-pyridine aldoxime methyl chloride) or 2-PAM, usually as the chloride or iodide salts, belongs to a family of compounds called oximes that bind to organophosphate-inactivated acetylcholinesterase. [1] It is used to treat organophosphate poisoning [2] in conjunction with atropine and either diazepam or midazolam. It is a white solid.
The disorder may contribute to the chronic multisymptom illnesses of the Gulf War veterans [3] [4] as well as aerotoxic syndrome (especially tricresyl phosphate poisoning) The exact cause of the syndrome is unknown, although it has been associated with inhibition of patatin-like phospholipase domain-containing protein 6 (PNPLA6, aka neuropathy ...
Organophosphate based nerve agent poisoning, such as VX, sarin, tabun, and soman (atropine is favoured in conjunction with an oxime, usually pralidoxime) [6] [7] Anticholinergics generally have antisialagogue effects (decreasing saliva production), and most produce some level of sedation, both being advantageous in surgical procedures. [8] [9]
Atropine is the standard anticholinergic drug used to manage the symptoms of nerve agent poisoning. [14] It acts as an antagonist to muscarinic acetylcholine receptors, blocking the effects of excess acetylcholine. [13]
Atropine, however, is difficult to administer safely, because its effective dose for nerve agent poisoning is close to the dose at which patients suffer severe side effects, such as changes in heart rate and thickening of the bronchial secretions, which fill the lungs of someone suffering nerve agent poisoning so that suctioning of these ...
Side effects similar to atropine; Prevention drug for motion sickness instead of treatment medication; Tiotropium: Similar to atropine; Does not inhibit bronchial mucociliary clearance; Poor absorption; Asthma and Chronic Obstructive Pulmonary Disease (COPD) Dilate airway by relaxing bronchial smooth muscles; Quaternary ammonium compound ...